Fixes the following TODO:
stty's visible() function and catv's guts are identical. Merge them into
an appropriate libbb function.
Also makes catv behave exactly like coreutils' cat -v e.g. it'll print 'M-^I'
instead of 'M- '.
function old new delta
visible - 70 +70
do_display 431 379 -52
catv_main 306 250 -56
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(add/remove: 1/0 grow/shrink: 0/2 up/down: 70/-108) Total: -38 bytes
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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